One of the better Ramen places of Montreal (I would definitely rank this place better than Misoya which is too salty and Hakata Ramen which Im not even sure qualifies as ramen). We went on a Sunday afternoon and the whole restaurant was empty and therefore, service was great!
We both ordered the tonkotsu ramen. The portions are just right, the soup base was slightly on the salty side (but nothing like misoya) but quite heavy, the noodles were nice and chewy. What I really liked about this ramen store is their homemade spicy oil that's on the table. Its very flagrant and has a touch of garlic. If you like spicy food, I definitely suggest that you add some!
However, we all got very thirsty not long after our meal (maybe too much salt in the soup?). Yokato Yokabai is definitely a god choice for ramen when in Montreal but it's far from ramen joints in Toronto (sansotei, santouka)